UNIDENTIFIED
XT-12
| Processor | 8088/V-20 | 
| Processor Speed | 12MHz | 
| Chip Set | None | 
| Max. Onboard DRAM | 1MB | 
| Cache | None | 
| BIOS | Unidentified | 
| Dimensions | 330mm x 218mm | 
| I/O Options | Floppy drive interface | 
| NPU Options | 8087 | 
 
| CONNECTIONS | |||
| Purpose | Location | Purpose | Location | 
| Floppy drive interface | FP1 | Speaker | JP4 | 
| Turbo LED | JP1 | Turbo switch | JP5 | 
| Keylock | JP2 | Power LED | JP6 | 
| Reset switch | JP3 | ||
| USER CONFIGURABLE SETTINGS | |||
| Function | Jumper | Position | |
| » | Factory configured - do not alter | JP7 | N/A | 
| » | Factory configured - do not alter | JP8 | N/A | 
| » | CPU type select Intel 8088 | JP11 | Closed | 
| CPU type select NEC V20 | JP11 | Open | |
| DRAM CONFIGURATION | |
| Size | Location | 
| 256KB | (2) 44256 chips in U4 and U5 | 
| 512KB | (4) 44256 chips in U3 through U6 | 
| 768KB | (6) 44256 chips in U2 through U7 | 
| 1MB | (8) 44256 chips in U1 through U8 | 
| BIOS CONFIGURATION | ||
| Size | JP9A | JP9B | 
| 8/16KB | Open | Open | 
| 32KB | Closed | Open | 
| 64KB | Closed | Closed | 
| FLOPPY DRIVE 0 CONFIGURATION | ||
| Size | JP10A | JP10B | 
| 360KB 5.25" | Closed | Closed | 
| 720KB 3.5 | Open | Closed | 
| 1.2MB 5.25 | Closed | Open | 
| 1.44MB 3.5" | Open | Open | 
| FLOPPY DRIVE 1 CONFIGURATION | ||
| Size | JP10C | JP10D | 
| 360KB 5.25" | Closed | Closed | 
| 720KB 3.5 | Open | Closed | 
| 1.2MB 5.25 | Closed | Open | 
| 1.44MB 3.5" | Open | Open |